1.   A BASIC program running on a microcomputer can generate a single stream pattern in about one second.

2.   The multiple-stream model allows the simulations of real stream patterns, using measurements of actual streams as a guide.

3.   The first hypothesis is that, in the absence of any controls, a stream pattern will develop randomly and will be described by the random-walk model.

4.   Practical tests on this type of simulation model have shown that real stream patterns are similar to those developed by simulation techniques.

5.   The use of simulation allows the observation of many possible stream patterns, far more than could be observed in the real world.